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Remote production of television or radio programmes
Presenters and camera operator of Sky Sports F1 on an outside broadcast in 2014.
Outside radio broadcasts have been taking place since the early 1920s and television ones since the late 1920s. The first large-scale outside broadcast was the televising of the Coronation of George VI and Elizabeth in May 1937, done by the BBC's first Outside Broadcast truck, MCR 1 (short for Mobile Control Room).
Tests in 8K resolution outside broadcasts began to take place during the 2010s, including tests by NHK and BT Sport. The first public 8K outside broadcast in the UK took place in February 2020.
Modern outside broadcasts now use specially designed OB vehicles, many of which are now built based around IP technology rather than relying on coaxial cable.
There has been an increasing rise in the use of flyaway or flypack Portable Production Units, which allow for an increased level of customisation and can be rigged in a larger variety of venues.
In the past many outside broadcasting applications have relied on using satellite uplinks to broadcast live audio and video back to the studio. While this has its advantages such as the ability to set up anywhere covered by the respective geostationary satellite, satellite uplinking is relatively expensive and the round trip latency is in the range of 240 to 280 milliseconds.
As more venues install fiber optic cable, this is increasingly used. For news gathering, contribution over public internet is also now used. Modern applications such as hardware and software IP codecs have allowed the use of public 3G/4G networks to broadcast video and audio. The latency of 3G is around 100-500 ms, while 4G is less than 100 ms.
Outside broadcast vehicles at Raymond James Stadium in advance of Super Bowl LV